Proton TherapyProtonsRadiotherapy Planning, Computer-AssistedProton PumpsRadiotherapy DosageRadiotherapy, Intensity-ModulatedOrgans at RiskRadiometryCraniospinal IrradiationNeutronsChordomaMonte Carlo MethodPhotonsRadiotherapy, ConformalEstrogen Replacement TherapyRadiotherapy, High-EnergyRelative Biological EffectivenessRadiation OncologyHormone Replacement TherapyProton Pump InhibitorsRadiation InjuriesUncertaintyFour-Dimensional Computed TomographyScattering, RadiationRadiation DosagePhantoms, ImagingFibromatosis, AbdominalPostmenopauseComplementary TherapiesMagnetic Resonance SpectroscopyRadiotherapyRadiotherapy, Computer-AssistedHydrogen-Ion ConcentrationProgestinsDose-Response Relationship, RadiationProton-Motive ForceMenopauseTumor BurdenTomography, X-Ray ComputedProstatic NeoplasmsAlgorithmsHealth Services MisuseCaliforniaNeoplasms, Radiation-InducedBreast NeoplasmsUnited StatesRisk FactorsBacteriorhodopsinsMammographyMovementCohort StudiesProton-Translocating ATPasesMedicine, TraditionalSpineAspartic AcidComputer SimulationRetrospective StudiesReproducibility of ResultsKinetics